1081615843 has 16 divisors (see below), whose sum is σ = 1363668480. Its totient is φ = 833342400.

The previous prime is 1081615817. The next prime is 1081615849. The reversal of 1081615843 is 3485161801.

It is not a de Polignac number, because 1081615843 - 2⁹ = 1081615331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081615849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72063 + ... + 85768.

It is an arithmetic number, because the mean of its divisors is an integer number (85229280).

Almost surely, 2^1081615843 is an apocalyptic number.

1081615843 is a deficient number, since it is larger than the sum of its proper divisors (282052637).

1081615843 is a wasteful number, since it uses less digits than its factorization.

1081615843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157938.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 1081615843 is about 32887.9285300853. The cubic root of 1081615843 is about 1026.4969894554.

The spelling of 1081615843 in words is "one billion, eighty-one million, six hundred fifteen thousand, eight hundred forty-three".